From: Chaitanya Kulkarni chaitanya.kulkarni@wdc.com
[ Upstream commit 5aec598c456fe3c1b71a1202cbb42bdc2a643277 ]
The function blk_log_remap() can be simplified by removing the call to get_pdu_remap() that copies the values into extra variable to print the data, which also fixes the endiannness warning reported by sparse.
Signed-off-by: Chaitanya Kulkarni chaitanya.kulkarni@wdc.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- kernel/trace/blktrace.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 8ab102ba25b4..fdfb47db9f04 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1274,17 +1274,6 @@ static __u64 get_pdu_int(const struct trace_entry *ent, bool has_cg) return be64_to_cpu(*val); }
-static void get_pdu_remap(const struct trace_entry *ent, - struct blk_io_trace_remap *r, bool has_cg) -{ - const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); - __u64 sector_from = __r->sector_from; - - r->device_from = be32_to_cpu(__r->device_from); - r->device_to = be32_to_cpu(__r->device_to); - r->sector_from = be64_to_cpu(sector_from); -} - typedef void (blk_log_action_t) (struct trace_iterator *iter, const char *act, bool has_cg);
@@ -1410,13 +1399,13 @@ static void blk_log_with_error(struct trace_seq *s,
static void blk_log_remap(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { - struct blk_io_trace_remap r = { .device_from = 0, }; + const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg);
- get_pdu_remap(ent, &r, has_cg); trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n", t_sector(ent), t_sec(ent), - MAJOR(r.device_from), MINOR(r.device_from), - (unsigned long long)r.sector_from); + MAJOR(be32_to_cpu(__r->device_from)), + MINOR(be32_to_cpu(__r->device_from)), + be64_to_cpu(__r->sector_from)); }
static void blk_log_plug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg)